RDP 2015-11: Unprecedented Changes in the Terms of Trade: Online Appendix Equation (22)

P X , t = S t P X , t * MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamiuamaaBa aaleaacaWGybGaaiilaiaadshaaeqaaOGaeyypa0Jaam4uamaaBaaa leaacaWG0baabeaakiaadcfadaqhaaWcbaGaamiwaiaacYcacaWG0b aabaGaaiOkaaaaaaa@40CA@